Fun Riddles

Question: Walk on the living, they don't even mumble.
But walk on the dead, they mutter and grumble.

What are they?

Question: How do you fix a broken pizza?

Question: Light hides me and darkness kills me.

What am I?

Question: You are running in a 400 meter race and you overtake the last person, what place are you now in?

Question: You have two buckets: one with only white marbles and one with only black marbles. The two buckets have the same number of marbles.

How can you rearrange the marbles to maximize your chances of grabbing a white marble from each?